Vehicle-mounted air conditioner driving system and vehicle

Abstract

The utility model discloses a vehicle-mounted air conditioner driving system and a vehicle, and the vehicle-mounted air conditioner driving system comprises a vehicle-mounted charger which is connected with a power battery and is suitable for being connected with an external power supply; the air conditioner driver is connected with the power battery; the switch matrix is connected with the vehicle-mounted charger, the air conditioner driver and the air conditioner compressor, and when the switch matrix is in a first state, an external power source charges the power battery through the vehicle-mounted charger; when the switch matrix is in a second state, the power battery drives the air conditioner compressor to work through the air conditioner driver; and when the switch matrix is in the third state, the power battery drives the air conditioner compressor to work through the vehicle-mounted charger. According to the system, under the condition that the air conditioner driver is damaged, the vehicle-mounted charger is temporarily called to serve as the air conditioner driver, the performance and the function of an air conditioner can be recovered, faults are degraded, and therefore the comfort, the power performance and the safety performance of a vehicle can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a vehicle-mounted air-conditioning driving system and a vehicle. Background Art

[0002] The high-voltage system of new energy electric vehicles consists of high-voltage components such as the electric drive, onboard charger, onboard DC-DC converter, heater, electric air conditioner, and power battery pack. In various usage scenarios, failure of a high-voltage component can often lead to reduced comfort and performance, loss of functionality, and even safety accidents. Therefore, it is necessary to address the failure degradation of high-voltage components to achieve high availability of vehicle functionality and performance, ultimately achieving safety goals.

[0003] In related technologies, electric air conditioners are prone to failure due to their prolonged operation in both stopped and moving situations. This can reduce ride comfort and lower the electric vehicle's power rating due to reduced heat dissipation. Furthermore, electric air conditioner failures typically occur in the drive control unit, while the air conditioner's compressor motor and mechanical compression unit remain intact. Utility Model Content

[0004] The present invention aims to at least partially address one of the technical problems in the related art. To this end, the first objective of the present invention is to provide a vehicle air conditioning drive system that, in the event of a faulty air conditioning driver, can temporarily utilize an onboard charger as the air conditioning driver, thereby restoring air conditioning performance and functionality and minimizing the fault, thereby ensuring vehicle comfort, power performance, and safety.

[0005] The second object of the present invention is to provide a vehicle.

[0006] To achieve the above-mentioned objectives, an embodiment of the first aspect of the present utility model proposes a vehicle-mounted air-conditioning drive system, comprising: an on-board charger, the on-board charger is connected to a power battery and is suitable for connecting to an external power supply; an air-conditioning driver, the air-conditioning driver is connected to the power battery; a switch matrix, the switch matrix is ​​respectively connected to the on-board charger, the air-conditioning driver and the air-conditioning compressor, wherein, when the switch matrix is ​​in a first state, the external power supply charges the power battery through the on-board charger; when the switch matrix is ​​in a second state, the power battery drives the air-conditioning compressor to work through the air-conditioning driver; when the switch matrix is ​​in a third state, the power battery drives the air-conditioning compressor to work through the on-board charger.

[0007] According to the vehicle air conditioning drive system of the present invention, when the switch matrix is ​​in the first state, an external power source charges the power battery via the onboard charger; when the switch matrix is ​​in the second state, the power battery drives the air conditioning compressor via the air conditioning driver; and when the switch matrix is ​​in the third state, the power battery drives the air conditioning compressor via the onboard charger. Thus, if the air conditioning driver fails, the system can temporarily use the onboard charger as the air conditioning driver, restoring air conditioning performance and functionality, reducing the fault to a degraded level, thereby ensuring vehicle comfort, power performance, and safety.

[0008] In addition, the vehicle air-conditioning driving system according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Specifically, the on-board charger includes a PFC (Power Factor Correction Circuit) circuit and a DCDC (Direct Current to Direct Current) conversion circuit. The switch matrix is ​​respectively connected to the PFC circuit, the air-conditioning driver and the air-conditioning compressor. The DCDC conversion circuit is respectively connected to the PFC circuit and the power battery.

[0010] Specifically, the PFC circuit includes multiple bridge arms connected in parallel, at least some of the multiple bridge arms are connected to PFC inductors, and the switch matrix is ​​respectively connected to the multiple bridge arms, the PFC inductors, the air conditioner driver and the air conditioner compressor.

[0011] Specifically, the PFC circuit is a three-phase PFC circuit, which includes three bridge arms, each of which is connected to a PFC inductor. The switch matrix includes three switch branches, each of which includes a first switch, a second switch, and a third switch. One end of the first switch is connected to one end of the corresponding PFC inductor, and the other end of the first switch is connected to the corresponding bridge arm. One end of the second switch is connected to the other end of the first switch, one end of the third switch is connected to the air conditioner driver, and the other end of the third switch is respectively connected to the other end of the second switch and the air conditioner compressor. The other end of the PFC inductor is suitable for connecting to the external power supply.

[0012] Specifically, the PFC circuit is a single-phase interleaved totem pole PFC circuit, comprising three bridge arms, two of the three bridge arms being respectively connected to a PFC inductor. The switch matrix comprises three switch branches, each of the switch branches comprising a first switch, a second switch, and a third switch. One end of a first switch of two of the three switch branches is connected to one end of a corresponding PFC inductor, and one end of a first switch of another switch branch is adapted to be connected to the external power supply. The other end of the first switch of each of the three switch branches is connected to the corresponding bridge arm, one end of the second switch of each of the three switch branches is connected to the other end of the first switch, one end of the third switch of each of the three switch branches is connected to the air conditioner driver, and the other end of the third switch of each of the three switch branches is respectively connected to the other end of the second switch and the air conditioner compressor. The other ends of the two PFC inductors are connected and adapted to be connected to the external power supply.

[0013] Specifically, the DCDC conversion circuit is an LLC (Inductor-Inductor-Capacitor) resonant circuit or a CLLC (Capacitor-Inductor-Capacitor-Inductor) resonant circuit.

[0014] Specifically, the air-conditioning driver is a three-phase inverter circuit, and the air-conditioning compressor is a three-phase compressor.

[0015] Specifically, the above system further includes: an EMI (Electromagnetic Interference) circuit, wherein the EMI circuit is connected to the on-board charger and the external power supply respectively.

[0016] Specifically, the PFC circuit further includes: a capacitor, which is connected in parallel with the multiple bridge arms.

[0017] To achieve the above-mentioned objectives, a second embodiment of the present invention provides a vehicle comprising the above-mentioned vehicle air-conditioning driving system.

[0018] According to the vehicle of the embodiment of the present invention, through the above-mentioned vehicle-mounted air-conditioning driving system, when the air-conditioning driver is damaged, the air-conditioning performance and function can be restored by temporarily calling the vehicle-mounted charger as the air-conditioning driver, so that the fault can be downgraded, thereby ensuring the comfort, power performance and safety performance of the vehicle.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of a vehicle air-conditioning driving system according to an embodiment of the present invention;

[0021] Figure 2 Schematic diagram of a vehicle air-conditioning driving system according to one embodiment of the present invention;

[0022] Figure 3 The hardware topology diagram of the vehicle air-conditioning driving system according to one embodiment of the present utility model;

[0023] Figure 4 A hardware topology diagram of a vehicle air-conditioning driving system according to another embodiment of the present invention;

[0024] Figure 5 Schematic diagram of a vehicle air-conditioning driving system according to one embodiment of the present invention;

[0025] Figure 6 It is a block diagram of a vehicle according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0026] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The vehicle air-conditioning driving system and the vehicle provided by the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0028] Figure 1 Schematic diagram of a vehicle air-conditioning driving system according to an embodiment of the present invention.

[0029] like Figure 1 As shown, the vehicle air-conditioning driving system 100 according to an embodiment of the present invention includes: a vehicle charger 110 , an air-conditioning driver 120 and a switch matrix 130 .

[0030] The onboard charger 110 is connected to the power battery and is also suitable for connecting to an external power source. The air conditioner driver 120 is also connected to the power battery. The switch matrix 130 is respectively connected to the onboard charger 110, the air conditioner driver 120, and the air conditioner compressor. When the switch matrix 130 is in a first state, the external power source charges the power battery through the onboard charger 110. When the switch matrix 130 is in a second state, the power battery drives the air conditioner compressor via the air conditioner driver 120. When the switch matrix 130 is in a third state, the power battery drives the air conditioner compressor via the onboard charger 110.

[0031] Specifically, when charging the power battery, the switch matrix 130 is in a first state, the onboard charger 110 is disconnected from the air conditioner driver 120 and the air conditioner compressor, the air conditioner driver 120 is disconnected from the air conditioner compressor, and an external power source charges the power battery through the onboard charger 110. When the air conditioner driver 120 is functioning normally, the switch matrix 130 is in a second state, the onboard charger 110 is disconnected from the air conditioner driver 120 and the air conditioner compressor, the air conditioner driver 120 is disconnected from the air conditioner compressor, and the power battery outputs direct current (DC) to the air conditioner driver 120. The air conditioner driver 120 converts the DC power into alternating current (AC) and outputs it to the air conditioner compressor to drive the compressor. When air conditioner driver 120 fails and cannot operate normally, switch matrix 130 enters the third state. Air conditioner driver 120 is disconnected from the air conditioner compressor, while onboard charger 110 is connected to the air conditioner compressor. The power battery outputs DC power to onboard charger 110, which then converts the DC power to AC power and outputs it to the air conditioner compressor to drive the compressor and restore air conditioner performance and functionality. Therefore, if air conditioner driver 120 fails, onboard charger 110 can be temporarily used as air conditioner driver 120 to restore air conditioner performance and functionality, minimizing the fault and ensuring vehicle comfort, power, and safety.

[0032] Furthermore, during the operation of the on-board charger 110, if the bus voltage is abnormally high, the air conditioner can be turned on to consume energy and protect the corresponding high-voltage components on the bus, such as bus capacitors and power switches.

[0033] According to one embodiment of the present invention, Figure 2 As shown, the on-board charger 110 includes a PFC circuit 111 and a DCDC conversion circuit 112 , the switch matrix 130 is respectively connected to the PFC circuit 111 , the air conditioner driver 120 and the air conditioner compressor, and the DCDC conversion circuit 112 is respectively connected to the PFC circuit 111 and the power battery.

[0034] Specifically, when charging the power battery, the switch matrix 130 is in a first state, the PFC circuit 111 is not connected to the air conditioner driver 120 and the air conditioner compressor, and the air conditioner driver 120 is not connected to the air conditioner compressor. The PFC circuit 111 can convert the power provided by the external power supply, namely the AC input voltage, into a DC voltage, providing a stable DC power supply for the subsequent DC-DC converter circuit 112. At the same time, it adjusts the AC input voltage and adjusts the phase and magnitude of the input current to synchronize with the input voltage, achieving a sinusoidal current waveform, reducing harmonic distortion, improving the overall power factor of the system 100, and reducing ineffective reactive power. The DC-DC converter circuit 112 can convert the DC voltage output by the PFC circuit 111 into a voltage and current level suitable for charging the power battery. The operating mode of the DC-DC converter circuit 112 can be adjusted based on the charging state of the power battery and external conditions, such as constant current charging (CC), constant voltage charging (CV), or a combination of the two.

[0035] When the air-conditioning driver 120 is normal, the switch matrix 130 is in the second state, the PFC circuit 111 is not connected to the air-conditioning driver 120 and the air-conditioning compressor, the air-conditioning driver 120 is not connected to the air-conditioning compressor, the power battery outputs DC power to the air-conditioning driver 120, and the air-conditioning driver 120 converts the DC power into AC power and outputs it to the air-conditioning compressor to drive the air-conditioning compressor to work.

[0036] When the air conditioner driver 120 fails and cannot operate normally, the switch matrix 130 enters the third state. The air conditioner driver 120 is disconnected from the air conditioner compressor, the PFC circuit 111 is connected to the air conditioner compressor, and the power battery outputs DC power to the DC-DC converter circuit 112. The DC-DC converter circuit 112 performs DC-DC conversion on the DC power provided by the power battery, converting it to DC power with voltage and current levels suitable for the operation of the PFC circuit 111 and outputting it to the PFC circuit 111. The PFC circuit 111 functions as an inverter, converting the DC power provided by the DC-DC converter circuit 112 to AC power, converting it to AC power to power the air conditioner compressor. As a result, thanks to the voltage stabilization effect of the DCDC converter circuit 112, the air conditioner can be powered by a regulated DC-DC power supply, ensuring that the air conditioner power is not reduced due to a decrease in the power battery voltage due to the SOC (State of Charge), and that the air conditioner operates in the high-efficiency range. Furthermore, because the supply voltage is adjustable and stabilizable, the air conditioner's high-voltage components are less likely to be damaged by abnormal supply voltage, greatly improving reliability.

[0037] According to one embodiment of the present invention, the PFC circuit 111 includes multiple bridge arms connected in parallel, at least some of the multiple bridge arms are connected to the PFC inductor L1, and the switch matrix 130 is respectively connected to the multiple bridge arms, the PFC inductor L1, the air conditioner driver 120 and the air conditioner compressor.

[0038] That is to say, the number of bridge arms of the PFC circuit 111 corresponds to the number of windings of the air-conditioning compressor. When the winding of the air-conditioning compressor is a three-phase winding, the PFC circuit 111 includes three bridge arms; when the winding of the air-conditioning compressor is a six-phase winding, the PFC circuit 111 includes six bridge arms.

[0039] According to one embodiment of the present invention, Figure 3 As shown, the PFC circuit 111 is a three-phase PFC circuit 111, which includes three bridge arms, each of which is connected to a PFC inductor L1. The switch matrix 130 includes three switch branches, each of which includes a first switch S1, a second switch S2, and a third switch S3. One end of the first switch S1 is connected to one end of the corresponding PFC inductor L1, and the other end of the first switch S1 is connected to the corresponding bridge arm. One end of the second switch S2 is connected to the other end of the first switch S1, one end of the third switch S3 is connected to the air conditioner driver 120, and the other end of the third switch S3 is respectively connected to the other end of the second switch S2 and the air conditioner compressor; wherein the other end of the PFC inductor L1 is suitable for connecting to an external power supply.

[0040] Specifically, if Figure 3As shown, when the onboard charger 110 is a three-phase charger, the PFC circuit 111 includes three bridge arms and three PFC inductors L1. The first bridge arm includes switches M1 and M2 connected in series, the second bridge arm includes switches M3 and M4 connected in series, and the third bridge arm includes switches M5 and M6 connected in series. The DC-DC converter circuit 112 includes a primary switching circuit, a voltage conversion circuit, and a secondary switching circuit. The primary switching circuit is connected to the PFC circuit 111 and the primary side of the voltage conversion circuit, respectively. The secondary switching circuit is connected to the secondary side of the voltage conversion circuit and the power battery, respectively. The primary switching circuit includes switches M7, M8, M9, and M10; the secondary switching circuit includes switches M11, M12, M13, and M14; and the voltage conversion circuit includes a first resonant inductor L2, a first resonant capacitor C2, a first transformer T1, a second resonant inductor L3, and a second resonant capacitor C3. The first resonant inductor L2 is connected in series between the first output terminal of the primary switching circuit and one end of the primary winding of the first transformer T1; the first resonant capacitor C2 is connected in series between the second output terminal of the primary switching circuit and the other end of the primary winding of the first transformer T1; the second resonant inductor L3 is connected in series between the first input terminal of the secondary switching circuit and one end of the secondary winding of the first transformer T1; and the second resonant capacitor C3 is connected in series between the second input terminal of the secondary switching circuit and one end of the secondary winding of the first transformer T1. The air conditioner driver 120 is a three-phase bridge inverter.

[0041] When charging the power battery, the switch matrix 130 is in the first state, the first switch S1 of the three switch branches is closed, the second switch S2 and the third switch S3 are open, the PFC circuit 111 is not connected to the air-conditioning driver 120 and the air-conditioning compressor, the air-conditioning driver 120 is not connected to the air-conditioning compressor, and the AC power provided by the external power supply is ACDC (Alternating Current to Direct Current) through the switch tubes M1-M6 of the three bridge arms of the PFC circuit 111. The first circuit performs AC to DC conversion, converting the input AC power into DC power, and improving the power factor through the PFC inductor L1. After filtering through the capacitor C1, the DC power is output to the DCDC conversion circuit. The input and output currents are regulated by adjusting the switching frequency of the switching tubes M7-M10 of the primary switching circuit. The electric energy is transferred to the secondary switching circuit through the first resonant inductor L2, the first resonant capacitor C2, the first transformer T1, the second resonant inductor L3 and the second resonant capacitor C3. The switching tubes M11-M14 of the secondary switching circuit are output rectifier tubes, which perform rectification and filter the current through the fourth capacitor C4 to charge the power battery.

[0042] When the air-conditioning driver 120 is normal, the switch matrix 130 is in the second state, the third switch S3 of the three switch branches is closed, the first switch S1 and the second switch S2 are disconnected, the PFC circuit 111 is not connected to the air-conditioning driver 120 and the air-conditioning compressor, the air-conditioning driver 120 is not connected to the air-conditioning compressor, the power battery outputs direct current to the air-conditioning driver 120, the air-conditioning driver 120 performs DC-AC conversion on the direct current, converts it into alternating current, and outputs it to the air-conditioning compressor to drive the air-conditioning compressor to operate.

[0043] When the air conditioner driver 120 fails and cannot operate normally, the switch matrix 130 is in the third state. The second switch S2 of the three switch branches is closed, and the first switch S1 and the third switch S3 are opened. The air conditioner driver 120 is not connected to the air conditioner compressor, the PFC circuit 111 is connected to the air conditioner compressor, and the power battery outputs DC power to the DC-DC conversion circuit 112. The output current is regulated by adjusting the switching frequency of the switches M11-M14 of the secondary switch circuit. The electrical energy is transferred to the primary switch circuit via the second resonant inductor L3, the second resonant capacitor C3, the first transformer T1, the first resonant inductor L2, and the first resonant capacitor C2. The switches M7-M10 of the primary switch circuit act as rectifier output transistors to rectify the electrical energy, converting it into DC power with a voltage and current level suitable for the operation of the PFC circuit 111 and outputting it to the PFC circuit 111. By adjusting the switching frequency of the switches M1-M6 of the three bridge arms of the PFC circuit 111, the DC power is inverted to AC power and converted into AC power to power the air conditioner compressor.

[0044] According to another embodiment of the present invention, Figure 4 As shown, the PFC circuit 111 is a single-phase interleaved totem pole PFC circuit 111. The single-phase interleaved totem pole PFC circuit 111 includes three bridge arms, two of which are respectively connected to a PFC inductor L1. The switch matrix 130 includes three switch branches, each of which includes a first switch S1, a second switch S2, and a third switch S3. One end of the first switch S1 of two of the three switch branches is connected to one end of the corresponding PFC inductor L1, and one end of the first switch S1 of the other switch branch is suitable for connecting to an external The other end of the first switch S1 of each of the three switch branches is connected to the corresponding bridge arm, one end of the second switch S2 of each of the three switch branches is connected to the other end of the first switch S1, one end of the third switch S3 of each of the three switch branches is connected to the air conditioner driver 120, and the other end of the third switch S3 of each of the three switch branches is respectively connected to the other end of the second switch S2 and the air conditioner compressor; wherein the other ends of the two PFC inductors L1 are connected and are suitable for connecting to an external power supply.

[0045] Specifically, if Figure 4 As shown, when the on-board charger 110 is a single-phase charger, the PFC circuit 111 includes three bridge arms and two PFC inductors L1. The specific structure of the three bridge arms of the PFC circuit 111 and the DCDC conversion circuit 112, as well as the corresponding working principle, can be found in FIG. Figure 3 The description of the corresponding embodiment will not be repeated here

[0046] According to an embodiment of the present invention, the DCDC conversion circuit 112 is an LLC resonant circuit or a CLLC resonant circuit. Figure 3 and Figure 4 The DCDC conversion circuit 112 in FIG. 1 includes a CLLC resonant circuit. It should be understood that Figure 3 and Figure 4 Replacing the CLLC resonant circuit with an LLC resonant circuit can also achieve Figure 3 and Figure 4 The functions that can be achieved by the DCDC conversion circuit 112 in FIG.

[0047] According to one embodiment of the present invention, Figure 3 or Figure 4 As shown, the air-conditioning driver 120 is a three-phase inverter circuit, and the air-conditioning compressor is a three-phase compressor.

[0048] According to one embodiment of the present invention, Figure 5 As shown, the above system 100 further includes an EMI circuit 140 , which is connected to the onboard charger 110 and the external power supply respectively.

[0049] Specifically, when charging the power battery, the EMI circuit 140 can suppress voltage fluctuations or electromagnetic interference generated by the external power source, thereby preventing the on-board charger 110 from being damaged by the voltage fluctuations or electromagnetic interference.

[0050] According to one embodiment of the present invention, Figure 3 or Figure 4 As shown, the PFC circuit 111 further includes a capacitor C1 , which is connected in parallel with the multiple bridge arms.

[0051] Specifically, the capacitor C1 can smooth the rectified pulsed DC voltage, reduce voltage fluctuation and ripple, provide a stable DC voltage for the DCDC conversion circuit 112, and reduce the harmonic components in the current and the reactive power, thereby improving the power factor of the PFC circuit 111.

[0052] In summary, the vehicle air-conditioning driving system of the embodiment of the present invention can achieve the following beneficial effects:

[0053] (1) This solution can use 400V platform electric air conditioners in 800V high-voltage architecture. The specifications of electric air conditioners can be platform-based and applied on a large scale to achieve low cost.

[0054] (2) Energy consumption can be reduced in AC plug-in cooling or heating scenarios. The existing AC grid requires two-stage conversion, PFC and DCDC, by the on-board charger to power the electric air conditioner. The on-board charger conversion efficiency is typically 94%. This solution reduces the DCDC conversion stage, achieving a typical power supply efficiency of 98%, significantly reducing energy consumption.

[0055] (3) During driving, the electric air conditioner can be powered by a DC-DC voltage regulator, ensuring that the power of the electric air conditioner does not drop due to a drop in the power battery voltage due to a decrease in the SOC, and that the air conditioner operates in the high-efficiency range. Furthermore, since the power supply voltage can be adjusted and stabilized, the high-voltage components of the electric air conditioner are less likely to be damaged by abnormal power supply voltage, greatly improving reliability.

[0056] (4) When the on-board charger is working, if the bus voltage is abnormally high, the electric air conditioner can be turned on to consume energy and protect the corresponding high-voltage devices on the bus, such as bus capacitors, power switching tubes, etc.

[0057] (5) Furthermore, the on-board charger and the electric air conditioner can be integrated according to the innovative new topology and share some components and structural shells, which can reduce costs and size.

[0058] In summary, according to the vehicle air conditioning drive system of the present invention, when the switch matrix is ​​in the first state, an external power source charges the power battery via the onboard charger; when the switch matrix is ​​in the second state, the power battery drives the air conditioning compressor via the air conditioning driver; and when the switch matrix is ​​in the third state, the power battery drives the air conditioning compressor via the onboard charger. Consequently, if the air conditioning driver fails, the system can temporarily use the onboard charger as the air conditioning driver, restoring air conditioning performance and functionality, minimizing the fault, thereby ensuring vehicle comfort, power, and safety.

[0059] Corresponding to the above embodiment, the present utility model also provides a vehicle.

[0060] Figure 6 It is a block diagram of a vehicle according to an embodiment of the present utility model.

[0061] like Figure 6 As shown, a vehicle 200 according to an embodiment of the present invention includes the above-mentioned vehicle air-conditioning driving system 100 .

[0062] According to the vehicle of the embodiment of the present invention, through the above-mentioned vehicle-mounted air-conditioning driving system, when the air-conditioning driver is damaged, the air-conditioning performance and function can be restored by temporarily calling the vehicle-mounted charger as the air-conditioning driver, so that the fault can be downgraded, thereby ensuring the comfort, power performance and safety performance of the vehicle.

[0063] It should be noted that the logic and / or steps represented in the flowcharts or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing the logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (e.g., a computer-based system, a system including a processor, or other system that can fetch and execute instructions from an instruction execution system, apparatus, or device). For purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk cartridge (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and programmable read-only memory (EPROM or flash memory), fiber optic devices, and portable compact disc read-only memory (CDROM). Furthermore, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing it in another suitable manner if necessary, and then storing it in a computer memory.

[0064] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0065] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0067] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A vehicle air conditioning driving system, characterized in that: include: An on-board charger, which is connected to the power battery and is suitable for connecting to an external power source; an air-conditioning driver connected to the power battery; A switch matrix is ​​connected to the on-board charger, the air-conditioning driver, and the air-conditioning compressor, respectively. When the switch matrix is ​​in a first state, the external power supply charges the power battery through the on-board charger; when the switch matrix is ​​in a second state, the power battery drives the air-conditioning compressor to operate through the air-conditioning driver; and when the switch matrix is ​​in a third state, the power battery drives the air-conditioning compressor to operate through the on-board charger.

2. The system according to claim 1, wherein: The on-board charger includes a PFC circuit and a DCDC conversion circuit. The switch matrix is ​​respectively connected to the PFC circuit, the air-conditioning driver and the air-conditioning compressor. The DCDC conversion circuit is respectively connected to the PFC circuit and the power battery.

3. The system according to claim 2, characterized in that The PFC circuit includes multiple bridge arms connected in parallel, at least some of the multiple bridge arms are connected to PFC inductors, and the switch matrix is ​​respectively connected to the multiple bridge arms, the PFC inductors, the air conditioner driver, and the air conditioner compressor.

4. The system according to claim 3, characterized in that The PFC circuit is a three-phase PFC circuit, comprising three bridge arms, each of which is connected to a PFC inductor. The switch matrix comprises three switch branches, each of which comprises a first switch, a second switch, and a third switch. One end of the first switch is connected to one end of the corresponding PFC inductor, the other end of the first switch is connected to the corresponding bridge arm, one end of the second switch is connected to the other end of the first switch, one end of the third switch is connected to the air conditioner driver, and the other end of the third switch is respectively connected to the other end of the second switch and the air conditioner compressor. The other end of the PFC inductor is suitable for connecting to the external power supply.

5. The system according to claim 3, wherein: The PFC circuit is a single-phase interleaved totem pole PFC circuit, comprising three bridge arms, two of which are respectively connected to a PFC inductor. The switch matrix comprises three switch branches, each of which comprises a first switch, a second switch, and a third switch. One end of the first switch of two of the three switch branches is connected to one end of the corresponding PFC inductor, and one end of the first switch of the other switch branch is suitable for connecting to the external power supply. The other end of the first switch of each of the three switch branches is connected to the corresponding bridge arm, one end of the second switch of each of the three switch branches is connected to the other end of the first switch, one end of the third switch of each of the three switch branches is connected to the air conditioner driver, and the other end of the third switch of each of the three switch branches is respectively connected to the other end of the second switch and the air conditioner compressor. The other ends of the two PFC inductors are connected and suitable for connecting to the external power supply.

6. The system according to claim 2, wherein: The DCDC conversion circuit is an LLC resonant circuit or a CLLC resonant circuit.

7. The system according to claim 4 or 5, characterized in that The air-conditioning driver is a three-phase inverter circuit, and the air-conditioning compressor is a three-phase compressor.

8. The system according to claim 1, wherein: Also includes: An EMI circuit is connected to the on-board charger and the external power supply respectively.

9. The system according to claim 3, wherein: The PFC circuit further includes a capacitor connected in parallel with the multiple bridge arms.

10. A vehicle, characterized in that: It comprises the vehicle air-conditioning driving system according to any one of claims 1-9.

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